3D projection equipment of DLP
By using auxiliary heat dissipation components and protective covers in DLP's 3D projection equipment, combined with hair dryers and support frames, the problems of mosquito impact and equipment stability during outdoor use are solved, and more efficient heat dissipation and protection effects are achieved to ensure clear picture and equipment security.
Patent Information
- Application Number
- CN202411410999.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2024-12-27
AI Technical Summary
When used outdoors, the light attracts mosquitoes and causes the projection image to be affected, and the equipment is easily dumped or damaged, and lacks a protective structure.
A DLP 3D projection device is designed, using auxiliary heat dissipation components and protective covers, which transports hot air into the protective covers through fans and blowers, increases the diffusion range of mosquito removal reagents, and prevents the equipment from pouring through support frames and triggers. and collision.
It effectively improves the heat dissipation efficiency of the equipment, prevents mosquitoes from approaching the lens, reduces projected black blocks, ensures clear projection images, and prevents the equipment from falling or getting damaged when used outdoors.
Smart Images
Figure CN119200307A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of projection equipment, in particular to a DLP 3D projection equipment. Background Art
[0002] 3D projectors mainly use TI's DLP Link technology. The principle is to output 120Hz refresh rate images through the DMD chip, and use the left and right eyes alternately to create a 3D "illusion" for the human eye. Its advantage is that it is simple and easy to use, and has relatively low hardware requirements.
[0003] With the improvement of living standards, people's entertainment methods have also become more diverse. People also use 3D projectors to watch movies during outdoor entertainment. When using 3D projectors outdoors, the projectors are generally placed on a stand, and then the projector lens is aimed at the set-up projection cloth, and then the projection operation is performed.
[0004] In the current existing technology, the technology of 3D projectors is gradually maturing. Many people like to carry projectors as entertainment during outdoor camping and dinner parties. During the use of the projector, a strong light will be generated. When used outdoors at night, these lights are very attractive to some light-loving mosquitoes, which will attract mosquitoes in actual use. When mosquitoes get close to the lens, they will be projected on the projection cloth, which will cause black blocks to appear in the projection, affecting the projection picture and viewing experience. At the same time, because the projector is used outdoors, for portability considerations, it will not be in a fixed state when used, which makes it possible for the projector to topple over during use, such as accidental human touch or sudden strong winds in the wild, and traditional projectors do not have corresponding protective structures.
[0005] To this end, the present invention provides a DLP 3D projection device. Summary of the invention
[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.
[0007] The technical solution adopted by the present invention to solve its technical problem is: a DLP 3D projection device described in the present invention includes a projector body, a lens is fixedly connected to the middle of the end of the projector body, a heat dissipation groove symmetrical to the lens is opened at the end of the projector body, two groups of auxiliary heat dissipation components are symmetrically arranged on the side wall of the projector body, the auxiliary heat dissipation components are used to assist in heat dissipation of the projector body, a protective cover is slidably connected to the lens, conveying components are symmetrically arranged on both sides of the protective cover, the conveying components are used to convey hot air into the protective cover, a cotton strip is clamped at the end of the protective cover, and the side wall of the projector body is rotatably connected to a support frame, and the support frame is fixed by a latch assembly.
[0008] Preferably, the auxiliary heat dissipation assembly includes two cylindrical barrels and two mounting grooves, the two cylindrical barrels are symmetrically installed on the side wall of the projector body, fans are fixedly connected in the two cylindrical barrels, the two mounting grooves are symmetrically opened on the side wall of the projector body, an air guide cover is fixedly connected in the mounting groove, one end of the air guide cover is placed in the cylindrical barrel and connected to the cylindrical barrel, and the other end of the air guide cover is fixedly connected to the air outlet cover.
[0009] Preferably, the conveying assembly includes two air inlet hoods, which are symmetrically installed on both sides of the lens. The backs of the two air inlet hoods are fixedly connected to a conveying pipe, and one end of the conveying pipe away from the air inlet hood is fixedly connected to the protective cover, and a blowing piece is provided on the protective cover.
[0010] Preferably, the blowing member includes a plurality of air guide grooves and a plurality of air holes, and the plurality of air guide grooves and the plurality of air holes are evenly and equidistantly arranged on the protective cover, and the air holes penetrate the end side walls of the protective cover, and an air guide block is installed in the air guide groove, and a slope surface is provided at one end of the air guide block close to the air hole.
[0011] Preferably, the latch assembly includes a plurality of positioning grooves and a U-shaped block, and the plurality of positioning grooves are evenly and equidistantly arranged on the side wall of the projector body. The U-shaped block is fixedly connected to the upper side wall of the support frame, and a positioning pin is slidably connected inside the U-shaped block. The end of the positioning pin away from the U-shaped block passes through the side wall of the support frame and is inserted into the positioning groove. A limiting ring is fixedly connected to the positioning pin, and a spring is provided on one side of the limiting ring, and the spring is sleeved on the positioning pin.
[0012] Preferably, two groups of pushing assemblies are symmetrically arranged on both sides of the protective cover, and the two groups of pushing assemblies are used to push the protective cover, and the pushing assemblies include a track plate and a fixed block 1, a slider is slidably connected in the track plate, the fixed block 1 is fixedly connected to the side wall of the protective cover, a pushing piece is arranged at the bottom of the slider, and the pushing piece is used to push the slider upward, and the top of the slider is rotatably connected to a rotating rod, and the end of the rotating rod away from the slider is rotatably connected to the fixed block 1, and a trigger piece is arranged at the lower part of the protective cover.
[0013] Preferably, the push member includes a piston cylinder, which is fixedly connected to the end surface of the projector body, a piston rod is slidably connected inside the piston cylinder, one end of the piston rod away from the piston cylinder is fixedly connected to the bottom surface of the slider, and an injection member is arranged at the bottom of the piston cylinder.
[0014] Preferably, the jet component comprises a compressed gas tank, which is fixedly connected to the end of the projector body, and a solenoid valve is fixedly connected to the gas outlet of the compressed gas tank, and the gas outlet end of the solenoid valve is fixedly connected to the gas inlet end of the piston cylinder.
[0015] Preferably, the trigger member includes a second fixed block and a supporting block, the second fixed block is fixedly connected to the end of the projector body, a swing rod is rotatably connected to the second fixed block, two abutment blocks are symmetrically fixedly connected to the side wall of one end of the swing rod close to the second fixed block, the supporting block is fixedly connected to the end face of the second fixed block, and two pressure sensors are fixedly connected to the supporting block.
[0016] Preferably, one end of the swing rod away from the second fixed block is fixedly connected to a counterweight ball.
[0017] The beneficial effects of the present invention are as follows:
[0018] A DLP 3D projection device described in the present invention is provided with an auxiliary heat dissipation component. When the projector body is in use, the fan conveys air outside the cylindrical tube into the cylindrical tube, and the air flows to the air outlet hood through the air guide hood, and is blown from the air outlet hood to the heat dissipation slot. On the one hand, it is beneficial to blow the heat at the heat dissipation slot to the protective cover, and on the other hand, it is beneficial to improve the heat dissipation efficiency of the heat dissipation slot, which is beneficial to avoiding the internal temperature of the projector body from being too high.
[0019] A DLP 3D projection device described in the present invention is provided with a protective cover and a conveying assembly. During the operation of the projector body, wind blown out from the air outlet cover blows the heat at the heat dissipation slot toward the air inlet cover, and the heat is transported to the protective cover through the air inlet cover and the conveying pipe, and is blown toward the cotton strip through the blowing member provided on the protective cover. On the one hand, the diffusion range of the mosquito removal agent on the cotton strip is increased, which is beneficial to prevent mosquitoes from approaching the lens. On the other hand, the blowing member can also increase the diffusion range of heat, so that the air temperature in the lens area is increased, which is beneficial to further prevent mosquitoes from approaching the lens. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The present invention will be further described below in conjunction with the accompanying drawings.
[0021] Figure 1 This invention is a schematic diagram Figure 1 ;
[0022] Figure 2 This invention is a schematic diagram Figure 2 ;
[0023] Figure 3 The projector main body of the present invention is schematically shown in FIG. Figure 1 ;
[0024] Figure 4 It is a schematic diagram of the local structure of the cylindrical tube in the present invention;
[0025] Figure 5 It is a schematic diagram of the local structure of the support frame of the present invention;
[0026] Figure 6 is a schematic diagram of the protective cover of the present invention;
[0027] Figure 7 It is a partial structural schematic diagram of the present invention;
[0028] Figure 8 It is a partial cutaway schematic diagram of the protective cover of the present invention;
[0029] Fig. 9 is a schematic diagram of a trigger member of the present invention;
[0030] Fig.10 The projector main body of the present invention is schematically shown in FIG. Figure 2 .
[0031] In the figure: 1. projector body; 2. heat sink; 3. lens; 4. cylinder; 5. fan; 6. mounting slot; 7. air guide cover; 8. air outlet cover; 9. air inlet cover; 10. protective cover; 11. conveying pipe; 12. air guide slot; 13. air guide block; 14. air hole; 15. cotton strip; 17. support frame; 171. U-shaped block; 172. positioning pin; 173. limiting ring; 174. spring; 175. positioning slot; 18. fixed block one; 19. rotating rod; 20. track plate; 21. slider; 22. piston cylinder; 23. piston rod; 24. compressed gas tank; 25. solenoid valve; 26. fixed block two; 27. swing rod; 28. counterweight ball; 29. block; 30. support block; 31. pressure sensor. DETAILED DESCRIPTION
[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.
[0033] Combination Figure 1 and Figure 2As shown, a DLP 3D projection device described in an embodiment of the present invention includes a projector body 1, a lens 3 is fixedly connected to the middle of the end of the projector body 1, a heat dissipation groove 2 symmetrical to the lens 3 is opened at the end of the projector body 1, two groups of auxiliary heat dissipation components are symmetrically arranged on the side wall of the projector body 1, and the auxiliary heat dissipation components are used to assist in heat dissipation of the projector body 1, a protective cover 10 is slidably connected to the lens 3, and conveying components are symmetrically arranged on both sides of the protective cover 10, and the conveying components are used to convey hot air into the protective cover 10, and a cotton strip 15 is clamped at the end of the protective cover 10, and the side wall of the projector body 1 is rotatably connected to a support frame 17, and the support frame 17 is fixed by a latch assembly; when working, in the process of using the projector body 1 outdoors in summer, first rotate the support frame 17 to fix the support frame 17. The support frame 17 makes the angle of the projector body 1 suitable, and then fixes the projector body 1 through the latch assembly. During the use of the projector body 1, add mosquito repellent to the cotton strip 15, and then start the auxiliary heat dissipation assembly. During the operation of the auxiliary heat dissipation assembly, on the one hand, it is beneficial to cooperate with the heat dissipation groove 2 to improve the heat dissipation efficiency of the projector body 1, and it is beneficial to avoid the internal temperature of the projector body 1 being too high. On the other hand, the auxiliary heat dissipation assembly blows the heat at the heat dissipation groove 2 to the conveying assembly, and the conveying assembly blows the heat to the protective cover 10, and then blows the heat from the protective cover 10 to the cotton strip 15, which is beneficial to the diffusion of the mosquito repellent, and it is beneficial to avoid mosquitoes from approaching the lens area, and then it is beneficial to avoid mosquitoes from being projected onto the projection cloth, resulting in the appearance of projection black blocks, affecting the projection picture and viewing experience.
[0034] Combination Figure 3 and Figure 4 As shown, the auxiliary heat dissipation component includes two cylindrical barrels 4 and two mounting grooves 6, the two cylindrical barrels 4 are symmetrically installed on the side wall of the projector body 1, and fans 5 are fixedly connected in the two cylindrical barrels 4. The two mounting grooves 6 are symmetrically opened on the side wall of the projector body 1, and an air guide cover 7 is fixedly connected in the mounting groove 6. One end of the air guide cover 7 is placed in the cylindrical barrel 4 and communicated with the cylindrical barrel 4, and the other end of the air guide cover 7 is fixedly connected to an air outlet cover 8; when working, during the use of the projector body 1, the fan 5 transports the air outside the cylindrical barrel 4 into the cylindrical barrel 4, and the air flows to the air outlet cover 8 through the air guide cover 7, and is blown from the air outlet cover 8 to the heat dissipation slot 2, which is beneficial to blowing the heat at the heat dissipation slot 2 to the protective cover 10 on the one hand, and is beneficial to improving the heat dissipation efficiency of the heat dissipation slot 2 on the other hand, and is beneficial to avoiding the internal temperature of the projector body 1 from being too high.
[0035] Combination Figure 2 and Figure 6As shown, the conveying assembly includes two air inlet covers 9, and the two air inlet covers 9 are symmetrically installed on both sides of the lens 3. The backs of the two air inlet covers 9 are fixedly connected with a conveying pipe 11, and the end of the conveying pipe 11 away from the air inlet cover 9 is fixedly connected to the protective cover 10, and a blowing piece is arranged on the protective cover 10; when working, during the operation of the projector body 1, the wind blown out from the air outlet cover 8 blows the heat at the heat dissipation slot 2 to the air inlet cover 9, and the heat is transported to the protective cover 10 through the air inlet cover 9 and the conveying pipe 11, and is blown to the cotton strip 15 through the blowing piece arranged on the protective cover 10. On the one hand, the diffusion range of the mosquito removal agent on the cotton strip 15 is increased, which is beneficial to prevent mosquitoes from approaching the lens 3. On the other hand, the blowing piece can also increase the diffusion range of the heat, so that the air temperature in the lens 3 area is increased, which is beneficial to further prevent mosquitoes from approaching the lens 3.
[0036] Combination Figure 6 and Figure 8 As shown, the blowing member includes a plurality of air guide grooves 12 and a plurality of air holes 14, and the plurality of air guide grooves 12 and the plurality of air holes 14 are evenly and equidistantly arranged on the protective cover 10, and the air holes 14 penetrate the end side wall of the protective cover 10, and an air guide block 13 is installed in the air guide groove 12, and a slope surface is arranged at one end of the air guide block 13 close to the air hole 14; when working, during the operation of the projector body 1, the wind blown out from the air outlet cover 8 blows the heat at the heat dissipation slot 2 to the air inlet cover 9, and the heat is gathered through the air inlet cover 9 and then transported to the protective cover through the delivery pipe 11 The cover 10, hot air is blown out from the air hole 14. During the process of hot air being blown out from the air hole 14, part of the heat is blown toward the cotton strip 15 through the air hole 14, which on the one hand increases the diffusion range of the mosquito repellent on the cotton strip 15, and on the other hand is conducive to forming a hot air layer in front of the lens 3, which is conducive to preventing mosquitoes from approaching the lens 3. Another part of the heat is blown toward the air guide block 13, and flows toward the outer circle part of the lens 3 through the guidance of the slope surface of the air guide block 13, which is conducive to increasing the area of the hot air layer, and is conducive to further increasing the area of hot air mosquito prevention.
[0037] Combination Figure 1 and Figure 5As shown, the latch assembly includes a plurality of positioning grooves 175 and a U-shaped block 171. The plurality of positioning grooves 175 are evenly and equidistantly arranged on the side wall of the projector body 1. The U-shaped block 171 is fixedly connected to the upper side wall of the support frame 17. A positioning pin 172 is slidably connected in the U-shaped block 171. One end of the positioning pin 172 away from the U-shaped block 171 penetrates through the side wall of the support frame 17 and is then inserted into the positioning groove 175. A limiting ring 173 is fixedly connected to the positioning pin 172. A spring 174 is provided on one side of the limiting ring 173. The spring 174 is sleeved on the On the positioning pin 172; during operation, when the projection angle of the lens 3 needs to be adjusted, the projector body 1 can be rotated on the support frame 17 and then fixed by the positioning pin 172. At the same time, when the projector body 1 is not in use, the support frame 17 can be rotated to the side of the lens 3 of the projector body 1, and then the support frame 17 can be fixed. In this way, the support frame 17 is helpful for protecting the lens 3 and preventing the lens 3 from being damaged by collision during the transportation of the projector body 1.
[0038] Combination Figure 6 and Figure 7 As shown, two groups of pushing assemblies are symmetrically arranged on both sides of the protective cover 10, and the two groups of pushing assemblies are used to push the protective cover 10. The pushing assemblies include a track plate 20 and a fixed block 18. A slider 21 is slidably connected in the track plate 20. The fixed block 18 is fixedly connected to the side wall of the protective cover 10. A push piece is arranged at the bottom of the slider 21. The push piece is used to push the slider 21 upward. The top of the slider 21 is rotatably connected to a rotating rod 19. The end of the rotating rod 19 away from the slider 21 is rotatably connected to the fixed block 18. The protective cover 10 A triggering member is provided at the lower part; during operation, when the projector body 1 is used outdoors and is accidentally touched, the projector body 1 shakes and falls, the triggering member is triggered, the pushing member is started, and the slider 21 is pushed upward. In the process of the slider 21 moving upward, the rotating rod 19 is pushed, so that the rotating rod 19 pushes the fixed block 18, so that the protective cover 10 slides toward the end of the lens 3, thereby protecting the lens 3, which is beneficial to avoid collision damage to the lens 3 when the projector body 1 shakes and falls.
[0039] Combination Figure 6 and Figure 7 As shown, the push member includes a piston cylinder 22, which is fixedly connected to the end surface of the projector body 1, and a piston rod 23 is slidably connected inside the piston cylinder 22. The end of the piston rod 23 away from the piston cylinder 22 is fixedly connected to the bottom surface of the slider 21, and a jet component is arranged at the bottom of the piston cylinder 22. During operation, when the trigger component is triggered, the jet component sprays high-pressure gas into the inner piston cylinder 22, and the high-pressure gas pushes the piston rod 23 upward, so that the piston rod 23 is pushed upward.
[0040] Combination Figure 6 and Figure 7 As shown, the jet component includes a compressed gas tank 24, which is fixedly connected to the end of the projector body 1, and a solenoid valve 25 is fixedly connected to the gas outlet of the compressed gas tank 24, and the gas outlet end of the solenoid valve 25 is fixedly connected to the gas inlet end of the piston cylinder 22; when working, when the trigger component is triggered, the solenoid valve 25 is started, so that the piston cylinder 22 is connected to the compressed gas tank 24, and the high-pressure gas in the compressed gas tank 24 enters the piston cylinder 22, pushing the piston rod 23 to move upward.
[0041] Combination Figure 1 and Fig. 9 As shown, the trigger member includes a fixed block 26 and a support block 30, the fixed block 26 is fixedly connected to the end of the projector body 1, the fixed block 26 is rotatably connected with a swing rod 27, the end of the swing rod 27 away from the fixed block 26 is fixedly connected with a counterweight ball 28, the side wall of the end of the swing rod 27 close to the fixed block 26 is symmetrically fixedly connected with two abutments 29, the support block 30 is fixedly connected to the end surface of the fixed block 26, and two pressure sensors 31 are fixedly connected to the support block 30; during operation, when the projector body 1 is used outdoors and the projector body 1 is accidentally touched and the projector body 1 shakes and falls, the counterweight ball 28 remains relatively motionless due to inertia, and the shaking and falling of the projector body 1 drives the fixed block 26 to rotate relative to the swing rod 27, so that the pressure sensor 31 on the support block 30 contacts and is squeezed by the abutment 29, at which time the solenoid valve 25 is started, and the high-pressure gas in the compressed gas tank 24 enters the piston cylinder 22.
[0042] Working principle: When using the projector body 1 outdoors in summer, first rotate the support frame 17 to make the angle of the projector body 1 suitable, then rotate the projector body 1 on the support frame 17 and fix it with the positioning pin 172.
[0043] During the use of the projector body 1, mosquito repellent is dripped onto the cotton strip 15, and then the fan 5 is started. The fan 5 conveys the air outside the cylindrical tube 4 into the cylindrical tube 4, and the air flows to the air outlet cover 8 through the air guide cover 7, and is blown from the air outlet cover 8 to the heat dissipation slot 2. On the one hand, it is beneficial to blow the heat at the heat dissipation slot 2 to the protective cover 10, and on the other hand, it is beneficial to improve the heat dissipation efficiency of the heat dissipation slot 2, which is beneficial to avoid the internal temperature of the projector body 1 from being too high.
[0044] The wind blown out from the air outlet hood 8 blows the heat at the heat dissipation slot 2 toward the air inlet hood 9. The heat is gathered by the air inlet hood 9 and then transported to the protective cover 10 through the transport pipe 11. The hot air is blown out from the air hole 14. During the process of the hot air being blown out from the air hole 14, part of the heat is blown toward the cotton strip 15 through the air hole 14. On the one hand, it increases the diffusion range of the mosquito removal agent on the cotton strip 15, and on the other hand, it is conducive to forming a hot air layer in front of the lens 3, which is conducive to preventing mosquitoes from approaching the lens 3. Another part of the heat is blown to the air guide block 13, and flows toward the outer circle part of the lens 3 through the guide of the slope surface of the air guide block 13, which is conducive to increasing the area of the hot air layer, further increasing the area of hot air mosquito protection, and preventing mosquitoes from approaching the lens area, and then preventing mosquitoes from being projected onto the projection cloth, resulting in the appearance of projection black blocks, affecting the projection picture and viewing experience.
[0045] During the outdoor use of the projector body 1, when the projector body 1 is accidentally hit and the projector body 1 shakes and falls, the counterweight ball 28 remains relatively motionless due to inertia, and the shaking and falling of the projector body 1 drives the fixed block 26 to rotate relative to the swing rod 27, so that the pressure sensor 31 on the support block 30 contacts and is squeezed by the stop block 29. At this time, the solenoid valve 25 is started, and the high-pressure gas in the compressed gas tank 24 enters the piston cylinder 22, pushing the piston rod 23 to move upward, pushing the slider 21 upward, and in the process of the slider 21 moving upward, it will push the rotating rod 19, so that the rotating rod 19 pushes the fixed block 18, so that the protective cover 10 slides toward the end of the lens 3, so that the lens 3 is protected, which is beneficial to avoid collision damage to the lens 3 when the projector body 1 shakes and falls.
[0046] When the projector body 1 is not in use, the support frame 17 can be rotated to the side of the lens 3 of the projector body 1, and then the support frame 17 can be fixed. This helps to protect the lens 3 through the support frame 17, and helps to prevent the lens 3 from being damaged by collision during the transportation of the projector body 1.
[0047] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims
1. A DLP 3D projection device, characterized in that: The projector comprises a main body (1), a lens (3) is fixedly connected to the middle of the end of the main body (1), a heat dissipation groove (2) symmetrical with respect to the lens (3) is opened at the end of the main body (1), two groups of auxiliary heat dissipation components are symmetrically arranged on the side wall of the main body (1), the auxiliary heat dissipation components are used to assist in heat dissipation of the main body (1), a protective cover (10) is slidably connected to the lens (3), conveying components are symmetrically arranged on both sides of the protective cover (10), the conveying components are used to convey hot air into the protective cover (10), a cotton strip (15) is clamped at the end of the protective cover (10), and a support frame (17) is rotatably connected to the side wall of the main body (1), and the support frame (17) is fixed by a latch assembly; The auxiliary heat dissipation assembly comprises two cylindrical barrels (4) and two mounting grooves (6), the two cylindrical barrels (4) are symmetrically mounted on the side wall of the projector body (1), the two cylindrical barrels (4) are fixedly connected with a fan (5), the two mounting grooves (6) are symmetrically arranged on the side wall of the projector body (1), an air guide cover (7) is fixedly connected in the mounting groove (6), one end of the air guide cover (7) is placed in the cylindrical barrel (4) and communicated with the cylindrical barrel (4), and the other end of the air guide cover (7) is fixedly connected with an air outlet cover (8); The conveying assembly comprises two air inlet covers (9), the two air inlet covers (9) are symmetrically mounted on both sides of the lens (3), the backs of the two air inlet covers (9) are fixedly connected to a conveying pipe (11), one end of the conveying pipe (11) away from the air inlet cover (9) is fixedly connected to a protective cover (10), and a blowing member is arranged on the protective cover (10); The blowing member comprises a plurality of air guide grooves (12) and a plurality of air holes (14), the plurality of air guide grooves (12) and the plurality of air holes (14) are evenly and equidistantly arranged on the protective cover (10), and the air holes (14) penetrate the end side wall of the protective cover (10), an air guide block (13) is installed in the air guide groove (12), and a slope surface is arranged at one end of the air guide block (13) close to the air hole (14); The latch assembly comprises a plurality of positioning grooves (175) and a U-shaped block (171); the plurality of positioning grooves (175) are evenly and equidistantly arranged on the side wall of the projector body (1); the U-shaped block (171) is fixedly connected to the upper side wall of the support frame (17); a positioning pin (172) is slidably connected inside the U-shaped block (171); an end of the positioning pin (172) away from the U-shaped block (171) passes through the side wall of the support frame (17) and is then inserted into the positioning groove (175); a limiting ring (173) is fixedly connected to the positioning pin (172); a spring (174) is provided on one side of the limiting ring (173); and the spring (174) is sleeved on the positioning pin (172); Two groups of pushing assemblies are symmetrically arranged on both sides of the protective cover (10), and the two groups of pushing assemblies are used to push the protective cover (10). The pushing assemblies include a track plate (20) and a fixed block (18). A slider (21) is slidably connected inside the track plate (20). The fixed block (18) is fixedly connected to the side wall of the protective cover (10). A push piece is arranged at the bottom of the slider (21), and the push piece is used to push the slider (21) upward. The top of the slider (21) is rotatably connected to a rotating rod (19). One end of the rotating rod (19) away from the slider (21) is rotatably connected to the fixed block (18). A trigger piece is arranged at the bottom of the protective cover (10).
2. A DLP 3D projection device according to claim 1, characterized in that: The push member comprises a piston cylinder (22), the piston cylinder (22) is fixedly connected to the end surface of the projector body (1), a piston rod (23) is slidably connected inside the piston cylinder (22), one end of the piston rod (23) away from the piston cylinder (22) is fixedly connected to the bottom surface of the slider (21), and an injection member is arranged at the bottom of the piston cylinder (22).
3. A DLP 3D projection device according to claim 2, characterized in that: The jet component comprises a compressed gas tank (24), which is fixedly connected to the end of the projector body (1), and a solenoid valve (25) is fixedly connected to the gas outlet of the compressed gas tank (24), and the gas outlet end of the solenoid valve (25) is fixedly connected to the gas inlet end of the piston cylinder (22).
4. The DLP 3D projection device according to claim 3, characterized in that: The triggering member comprises a second fixed block (26) and a supporting block (30); the second fixed block (26) is fixedly connected to the end of the projector body (1); a swing rod (27) is rotatably connected to the second fixed block (26); two abutment blocks (29) are symmetrically fixedly connected to the side wall of one end of the swing rod (27) close to the second fixed block (26); the supporting block (30) is fixedly connected to the end surface of the second fixed block (26); and two pressure sensors (31) are fixedly connected to the supporting block (30).
5. The DLP 3D projection device according to claim 4, characterized in that: One end of the swing rod (27) away from the second fixed block (26) is fixedly connected to a counterweight ball (28).